US20100193612A1 - Fuel Injector and Method for Forming Spray-Discharge Openings - Google Patents

Fuel Injector and Method for Forming Spray-Discharge Openings Download PDF

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Publication number
US20100193612A1
US20100193612A1 US11/990,053 US99005306A US2010193612A1 US 20100193612 A1 US20100193612 A1 US 20100193612A1 US 99005306 A US99005306 A US 99005306A US 2010193612 A1 US2010193612 A1 US 2010193612A1
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US
United States
Prior art keywords
spray
discharge opening
discharge
fuel injector
discharge openings
Prior art date
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Abandoned
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US11/990,053
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English (en)
Inventor
Andreas Schrade
Dieter Maier
Gerhard Stransky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STRANSKY, GERHARD, MAIER, DIETER, SCHRADE, ANDREAS
Publication of US20100193612A1 publication Critical patent/US20100193612A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/1826—Discharge orifices having different sizes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/004—Filling molds with powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/1833—Discharge orifices having changing cross sections, e.g. being divergent

Definitions

  • the present invention is directed to a fuel injector and a method for forming spray-discharge openings.
  • a fuel injector which has a stepped spray-discharge opening, is discussed in GB 1,088,666 A.
  • the spray-discharge opening is implemented originating from a chamber-shaped valve interior space into a first opening section having a very small opening width, which determines the flow rate, while an adjoining second opening section is significantly expanded.
  • the second opening section may be designed to expand into either a cylinder or a cone.
  • the spray-discharge openings are introduced using conventional technology, such as drilling, milling, embossing, or eroding.
  • a fuel injector having a valve needle manufactured using the so-called metal injection molding method (MIM method) is also discussed in DE 42 30 376 C1.
  • MIM method metal injection molding method
  • a tubular actuating part which includes an armature section and a valve sleeve section, is produced by injection molding and subsequent sintering.
  • the actuating part is subsequently bonded to a valve closing element section using a welded joint, so that the valve needle is composed of only two individual components.
  • a continuous internal longitudinal opening is provided in the armature section and the valve sleeve section, in which fuel may flow in the direction of the valve closing element section and then exits from the valve sleeve section through transverse openings in the proximity of the valve closing element section. Therefore, slide molds are necessary when manufacturing the valve needle using the MIM method to form the transverse openings.
  • a binary binder system like the solid polymer solution for the metal injection molding technique is discussed in DE 40 33 952 C1. It is distinguished by the use of physiologically harmless low-molecular binder components and by dispensing with wetting agents. In this way, dense molded parts made of metal powders may be manufactured without problems by injection molding and the binder may be removed therefrom, without contraction or warping.
  • the fuel injector according to the exemplary embodiments and/or exemplary methods of the present invention has the advantage that it is particularly simple and cost-effective to manufacture.
  • the valve component having the spray-discharge openings, in particular the valve seat element is manufactured using the metal injection molding method (MIM).
  • MIM metal injection molding method
  • the exemplary embodiments and/or exemplary methods of the present invention is distinguished in that a large number of stepped spray-discharge openings may be formed in a molded part manufactured using the MIM method with high precision while bound to the mold.
  • the configuration and embodiment of the spray-discharge openings in the valve component according to the exemplary embodiments and/or exemplary methods of the present invention allow simultaneous forming of multiple reproducible spray-discharge openings.
  • first spray-discharge opening sections discharge into a peripheral second spray-discharge opening section in the shape of a ring or a partial ring.
  • the method according to the present invention for forming spray-discharge openings having the characterizing features of Claim 15 has the advantage that the ability to form the downstream spray-discharge opening sections of the spray-discharge openings axially or radially makes it possible to integrate the contours of the spray-discharge opening sections into an injection mold with a very high variance.
  • Significant cost advantages result in relation to known approaches, because the spray-discharge openings having their spray-discharge opening sections may be manufactured while mold-bound.
  • Known separate work steps for manufacturing the spray-discharge opening sections such as punching, drilling, eroding, or laser drilling, may be dispensed with.
  • the spray-discharge openings having their spray-discharge opening sections may be manufactured according to the present invention with high reproducibility and high quality features while maintaining all dimensional tolerances, shape tolerances, and position tolerances.
  • FIG. 1 shows a schematic section of an exemplary embodiment of a fuel injector having spray-discharge openings formed according to the exemplary embodiments and/or exemplary methods of the present invention in a valve seat element.
  • FIG. 2 shows detail II in the area of a spray-discharge opening in FIG. 1 in an enlarged illustration, the spray-discharge opening being implemented in a first embodiment.
  • FIG. 3 shows a valve seat element having a spray-discharge opening in a second embodiment in a detail illustration comparable to FIG. 2 .
  • FIG. 4 shows a valve seat element having a spray-discharge opening in a third embodiment in a detail illustration comparable to FIG. 2 .
  • FIG. 1 An exemplary embodiment of a fuel injector 1 illustrated in FIG. 1 is implemented in the form of a fuel injector 1 for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines.
  • Fuel injector 1 is suitable in particular for direct injection of fuel into a combustion chamber (not shown) of an internal combustion engine.
  • Fuel injector 1 includes a nozzle element 2 in which a valve needle 3 is situated. Valve needle 3 is operatively linked to a valve closing element 4 , which works together with a valve face 6 situated on a valve seat element 5 to form a sealing seat. Fuel injector 1 in the exemplary embodiment is an inwardly opening fuel injector 1 , which has at least two spray-discharge openings 7 . Fuel injector 1 is ideally implemented as a multi-orifice injector, however, and therefore has between four and thirty spray-discharge openings 7 . Nozzle element 2 is sealed against a valve housing 9 by a seal 8 .
  • An electromagnetic circuit which includes a solenoid coil 10 as an actuator, which is encapsulated in a coil housing 11 and is wound on a coil support 12 , which presses against an inner pole 13 of solenoid coil 10 , is used as a drive, for example.
  • Inner pole 13 and valve housing 9 are separated from one another by a constriction 26 and connected to one another by a non-ferromagnetic connection component 29 .
  • Solenoid coil 10 is excited via a line 19 by electrical current which may be supplied via an electrical plug contact 17 .
  • Plug contact 17 is enclosed by a plastic sheath 18 , which may be sprayed onto inner pole 13 .
  • Valve needle 3 is guided in a valve needle guide 14 , which is designed to be disk-shaped.
  • a paired setting disk 15 is used for setting the stroke.
  • An armature 20 is located on the other side of setting disk 15 . This armature is connected in a friction-locked manner via a first flange 21 to valve needle 3 , which is connected by a weld seam 22 to first flange 21 .
  • a restoring spring 23 which is pre-tensioned in the present construction of fuel injector 1 by a setting sleeve 24 is supported on first flange 21 .
  • Fuel ducts 30 , 31 , and 32 run in valve needle guide 14 , in armature 20 , and on guide element 41 , respectively.
  • the fuel is supplied via a central fuel supply 16 and filtered by a filter element 25 .
  • Fuel injector 1 is sealed by a seal 28 against a fuel distributor line (not shown further) and by a further seal 36 against a cylinder head (not shown further).
  • An annular damping element 33 which is made of an elastomer material, is situated on the downstream side of armature 20 . It presses against a second flange 34 , which is connected in a friction-locked manner to valve needle 3 via a weld seam 35 .
  • restoring spring 23 is applied to armature 20 against its stroke direction in such a way that valve closing element 4 is held in contact with valve face 6 to form a seal.
  • solenoid coil 10 Upon excitation of solenoid coil 10 , it builds up a magnetic field, which moves armature 20 against the spring force of restoring spring 23 in the stroke direction, the stroke being predefined by an operating gap 27 located in the rest position between inner pole 12 and armature 20 .
  • Armature 20 also carries along first flange 21 , which is welded to valve needle 3 , in the stroke direction.
  • Valve closing element 4 connected to valve needle 3 lifts off of valve face 6 and the fuel is spray-discharged through spray-discharge openings 7 .
  • valve needle 3 If the coil current is turned off, armature 20 drops off of inner pole 13 due to the pressure of restoring spring 23 after the magnetic field has decreased sufficiently so that first flange 21 , which is connected to valve needle 3 , moves against the stroke direction. Valve needle 3 is thus moved in the same direction, causing valve closing element 4 to be seated on valve face 6 and fuel injector 1 to close.
  • valve seat element 5 is advantageously manufactured using the so-called MIM method.
  • MIM metal injection molding
  • the already known method includes the manufacture of molded parts from a metal powder and a binder, e.g., a plastic binder, which are mixed with one another and homogenized, for example, using conventional plastic injection molding machines, and the subsequent removal of the binder and sintering of the remaining metal powder framework.
  • the composition of the metal powder may be easily adjusted to optimum magnetic and thermal properties.
  • spray-discharge openings 7 are susceptible to coking of the free cross section, so that the desired injection quantities may disadvantageously be reduced. It is accordingly desirable to set the temperature economy in the area of the downstream end of fuel injector 1 around valve seat element 5 in a targeted way. In addition, it is to be ensured to the greatest extent possible that a constant volume flow quantity may be spray-discharged via spray-discharge openings 7 over the entire service life of fuel injector 1 .
  • the exemplary embodiments and/or exemplary methods of the present invention is distinguished in that a large number of stepped spray-discharge openings 7 may be formed particularly simply and cost-effectively and with high precision while bound to the mold in a molded part manufactured using MIM methods, in valve seat element 5 here.
  • spray-discharge openings of fuel injectors which are implemented as multi-orifice valves
  • every spray-discharge opening and/or, for stepped spray-discharge openings, every downstream spray-discharge opening section has a separate spatial angle.
  • spray-discharge openings 7 for optimized and cost-effective and thus simultaneous forming of multiple spray-discharge openings 7 , such a configuration and design of spray-discharge openings 7 in valve seat element 5 are more difficult.
  • spray-discharge openings 7 may be formed especially favorably if all spray-discharge openings 7 of a semi-circle have a wall area 42 running parallel to longitudinal axis 40 of the valve component having spray-discharge openings 7 , valve seat element 5 here, at least in their particular downstream spray-discharge opening section 7 ′′.
  • Longitudinal axis 40 of valve seat element 5 is coincident with the valve longitudinal axis in the exemplary embodiments shown.
  • valve seat element 5 may also be attached at an angle to fuel injector 1 for diagonal spray-discharge.
  • FIG. 2 shows detail II in the area of a spray-discharge opening 7 in FIG. 1 in an enlarged illustration in a first embodiment, it being clear that spray-discharge opening 7 includes two spray-discharge opening sections 7 ′, 7 ′′.
  • Upstream first spray-discharge opening section 7 ′ has a significantly smaller opening width than downstream following second spray-discharge opening section 7 ′′.
  • the orientation of both spray-discharge opening sections 7 ′, 7 ′′ of one spray-discharge opening 7 may differ.
  • wall area 42 of second spray-discharge opening section 7 ′′ of all spray-discharge openings 7 on a semi-circle, which runs parallel to longitudinal axis 40 is essential.
  • Parallel wall area 42 is to lie on the interior side toward longitudinal axis 40 .
  • entire spray-discharge opening section 7 ′′ may also run axially parallel.
  • FIG. 3 A second exemplary embodiment of a spray-discharge opening 7 in a valve seat element 5 is shown in FIG. 3 in a detail illustration comparable to FIG. 2 .
  • wall area 42 implemented on the interior side toward longitudinal axis 40 is configured to run parallel to longitudinal axis 40 here, while the wall area runs outward at an angle on the side distal to longitudinal axis 40 .
  • Arrows 44 in FIGS. 2 and 3 are to indicate that in such an embodiment of spray-discharge opening sections 7 ′′, all spray-discharge openings 7 may ideally be axially formed simultaneously while mold-bound in the MIM process.
  • a spray-discharge opening 7 in a valve seat element 5 which is also shown in a detail illustration comparable to FIG. 2 in FIG. 4
  • all spray-discharge openings 7 of a semi-circle are designed at least in their particular downstream spray-discharge opening section 7 ′′ in such a way that a wall area 43 runs at a right angle to longitudinal axis 40 .
  • Wall area 43 running at a right angle is to lie on the upper side toward valve face 6 .
  • the lower wall area distal from valve face 6 may run outward at an angle.
  • Double arrow 44 in FIG. 4 indicates that in such an embodiment of spray-discharge opening sections 7 ′′, all spray-discharge openings 7 may ideally be radially demoldable while mold-bound simultaneously in the MIM process.
  • downstream spray-discharge opening 7 ′′ may also run around the circumference in a partial or a complete ring, into which some or all upstream spray-discharge opening sections 7 ′ discharge.
  • wall areas 42 , 43 of spray-discharge opening section 7 ′′ in the shape of a partial or a complete ring are accordingly implemented either parallel or at a right angle to longitudinal axis 40 of valve seat element 5 .
  • spray-discharge opening sections 7 ′′ of spray-discharge openings 7 Due to the ability to axially or radially form spray-discharge opening sections 7 ′′ of spray-discharge openings 7 , it is possible to integrate the contours of spray-discharge opening sections 7 ′′ in a very high variance in an injection mold. Significant cost advantages result in relation to known solutions, because spray-discharge openings 7 may be manufactured with their spray-discharge opening sections 7 ′′ while mold-bound. Known separate work steps for manufacturing spray-discharge opening sections 7 ′′, such as punching, boring, eroding, or laser boring, may be dispensed with.
  • Spray-discharge openings 7 with their spray-discharge opening sections 7 ′′ may be manufactured according to the exemplary embodiments and/or exemplary methods of the present invention with high reproducibility and high quality features while maintaining all dimensional tolerances, shape tolerances, and position tolerances.
  • the exemplary embodiments and/or exemplary methods of the present invention is not restricted to the illustrated exemplary embodiments and is applicable, for example, for spray-discharge openings 7 situated in other ways and for any construction of inwardly opening multi-orifice fuel injectors 1 .
  • all features of the exemplary embodiments and/or exemplary methods of the present invention may be combined arbitrarily.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
US11/990,053 2005-08-05 2006-06-14 Fuel Injector and Method for Forming Spray-Discharge Openings Abandoned US20100193612A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005036951.0 2005-08-05
DE102005036951A DE102005036951A1 (de) 2005-08-05 2005-08-05 Brennstoffeinspritzventil und Verfahren zur Ausformung von Abspritzöffnungen
PCT/EP2006/063176 WO2007017305A1 (fr) 2005-08-05 2006-06-14 Soupape d'injection de carburant et procede pour façonner des orifices de pulverisation

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/063176 A-371-Of-International WO2007017305A1 (fr) 2005-08-05 2006-06-14 Soupape d'injection de carburant et procede pour façonner des orifices de pulverisation

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/516,690 Division US9803606B2 (en) 2005-08-05 2014-10-17 Fuel injector and method for forming spray-discharge openings

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Publication Number Publication Date
US20100193612A1 true US20100193612A1 (en) 2010-08-05

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Application Number Title Priority Date Filing Date
US11/990,053 Abandoned US20100193612A1 (en) 2005-08-05 2006-06-14 Fuel Injector and Method for Forming Spray-Discharge Openings
US14/516,690 Expired - Fee Related US9803606B2 (en) 2005-08-05 2014-10-17 Fuel injector and method for forming spray-discharge openings

Family Applications After (1)

Application Number Title Priority Date Filing Date
US14/516,690 Expired - Fee Related US9803606B2 (en) 2005-08-05 2014-10-17 Fuel injector and method for forming spray-discharge openings

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US (2) US20100193612A1 (fr)
EP (1) EP1913254B1 (fr)
JP (1) JP4991720B2 (fr)
DE (1) DE102005036951A1 (fr)
WO (1) WO2007017305A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090272824A1 (en) * 2008-05-01 2009-11-05 Mitsubishi Electric Corporation Fuel injection valve
US20120325938A1 (en) * 2011-06-24 2012-12-27 Mitsubishi Electric Corporation Fuel injection valve
CN103582753A (zh) * 2011-06-09 2014-02-12 罗伯特·博世有限公司 用于内燃机的喷射阀
US20140190451A1 (en) * 2011-06-09 2014-07-10 Marco Vorbach Fuel injector for internal combustion engines
US20150034053A1 (en) * 2011-12-20 2015-02-05 Dieter Maier Fuel injector and method for forming spray-discharge orifices
US20150377202A1 (en) * 2013-02-04 2015-12-31 Hitachi Automotive Systems, Ltd. Fuel Injection Valve
US20160097359A1 (en) * 2014-10-01 2016-04-07 Kabushiki Kaisha Toyota Jidoshokki Fuel injection valve
US20180030943A1 (en) * 2015-04-09 2018-02-01 Denso Corporation Fuel injection device
US20180045157A1 (en) * 2013-08-02 2018-02-15 Denso Corporation Fuel injector

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DE102006051327A1 (de) * 2006-10-31 2008-05-08 Robert Bosch Gmbh Brennstoffeinspritzventil
US20110186654A1 (en) * 2010-02-02 2011-08-04 Delphi Technologies, Inc. Valve seat for gaseous fuel injector
DE102011077276A1 (de) 2011-06-09 2012-12-13 Robert Bosch Gmbh Ventil zum Zumessen eines strömenden Mediums
DE102011078086A1 (de) 2011-06-27 2012-12-27 Robert Bosch Gmbh Einspritzventil für Brennkraftmaschinen
JP2014001660A (ja) * 2012-06-18 2014-01-09 Bosch Corp 内燃機関の燃料噴射弁
DE102012211459A1 (de) * 2012-07-03 2014-01-09 Robert Bosch Gmbh Kraftstoffeinspritzventil mit verbessertem Spritzloch
DE112019001538T5 (de) * 2018-04-25 2020-12-10 Robert Bosch Gmbh Kraftstoffeinspritzventilsitzanordnung, die einen in position geformten einsatz umfasst, und verfahren zur herstellung davonhintergrund

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US4890794A (en) * 1987-10-05 1990-01-02 Robert Bosch Gmbh Perforated body for a fuel injection valve
US5163621A (en) * 1989-12-12 1992-11-17 Nippondenso Co., Ltd. Fuel injection valve having different fuel injection angles at different opening amounts
US20040074996A1 (en) * 2002-10-16 2004-04-22 Mitsubishi Denki Kabushiki Kaisha Fuel injection valve
US20040104285A1 (en) * 2002-11-29 2004-06-03 Denso Corporation And Nippon Soken, Inc. Injection hole plate and fuel injection apparatus having the same
US20040237929A1 (en) * 2003-05-30 2004-12-02 Caterpillar Inc. Fuel injector nozzle for an internal combustion engine

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GB1088666A (en) * 1964-03-09 1967-10-25 Lister & Co Ltd R A Improvements in or relating to fuel injectors for internal combustion engines
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DE4230376C1 (fr) * 1992-09-11 1993-04-22 Robert Bosch Gmbh, 7000 Stuttgart, De
US6439484B2 (en) * 2000-02-25 2002-08-27 Denso Corporation Fluid injection nozzle

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US4890794A (en) * 1987-10-05 1990-01-02 Robert Bosch Gmbh Perforated body for a fuel injection valve
US5163621A (en) * 1989-12-12 1992-11-17 Nippondenso Co., Ltd. Fuel injection valve having different fuel injection angles at different opening amounts
US20040074996A1 (en) * 2002-10-16 2004-04-22 Mitsubishi Denki Kabushiki Kaisha Fuel injection valve
US20040104285A1 (en) * 2002-11-29 2004-06-03 Denso Corporation And Nippon Soken, Inc. Injection hole plate and fuel injection apparatus having the same
US20040237929A1 (en) * 2003-05-30 2004-12-02 Caterpillar Inc. Fuel injector nozzle for an internal combustion engine

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090272824A1 (en) * 2008-05-01 2009-11-05 Mitsubishi Electric Corporation Fuel injection valve
US8191800B2 (en) * 2008-05-01 2012-06-05 Mitsubishi Electric Corporation Fuel injection valve
US9771912B2 (en) * 2011-06-09 2017-09-26 Robert Bosch Gmbh Fuel injector for internal combustion engines
CN103582753A (zh) * 2011-06-09 2014-02-12 罗伯特·博世有限公司 用于内燃机的喷射阀
US20140190451A1 (en) * 2011-06-09 2014-07-10 Marco Vorbach Fuel injector for internal combustion engines
US20140224214A1 (en) * 2011-06-09 2014-08-14 Marco Vorbach Injection valve for internal combustion engines
US20120325938A1 (en) * 2011-06-24 2012-12-27 Mitsubishi Electric Corporation Fuel injection valve
US8919675B2 (en) * 2011-06-24 2014-12-30 Mitsubishi Electric Corporation Fuel injection valve
US20150034053A1 (en) * 2011-12-20 2015-02-05 Dieter Maier Fuel injector and method for forming spray-discharge orifices
US20150377202A1 (en) * 2013-02-04 2015-12-31 Hitachi Automotive Systems, Ltd. Fuel Injection Valve
US9599083B2 (en) * 2013-02-04 2017-03-21 Hitachi Automotive Systems, Ltd. Fuel injection valve
US20180045157A1 (en) * 2013-08-02 2018-02-15 Denso Corporation Fuel injector
US10260470B2 (en) * 2013-08-02 2019-04-16 Denso Corporation Fuel injector
US20160097359A1 (en) * 2014-10-01 2016-04-07 Kabushiki Kaisha Toyota Jidoshokki Fuel injection valve
US9605637B2 (en) * 2014-10-01 2017-03-28 Toyota Jidosha Kabushiki Kaisha Fuel injection valve
US20180030943A1 (en) * 2015-04-09 2018-02-01 Denso Corporation Fuel injection device
US10280887B2 (en) * 2015-04-09 2019-05-07 Denso Corporation Fuel injection device

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US9803606B2 (en) 2017-10-31
JP4991720B2 (ja) 2012-08-01
US20150034741A1 (en) 2015-02-05
EP1913254A1 (fr) 2008-04-23
DE102005036951A1 (de) 2007-02-08
JP2009503353A (ja) 2009-01-29
WO2007017305A1 (fr) 2007-02-15
EP1913254B1 (fr) 2012-11-21

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